LTC2172CUKG-14PBF LINER [Linear Technology], LTC2172CUKG-14PBF Datasheet - Page 18

• Manufacturer Part Number: LTC2172CUKG-14PBF
• Description: 14-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
• Manufacturer: LINER [Linear Technology]

LTC2172-14/
LTC2171-14/LTC2170-14
FUNCTIONAL BLOCK DIAGRAM
18
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
ANALOG
ANALOG
ANALOG
ANALOG
INPUT
INPUT
INPUT
INPUT
SENSE
1μF
V
REF
AND-HOLD
AND-HOLD
AND-HOLD
AND-HOLD
REFERENCE
SAMPLE-
SAMPLE-
SAMPLE-
SAMPLE-
SELECT
RANGE
GND
1.25V
REF
BUF
ADC CORE
ADC CORE
ADC CORE
ADC CORE
14-BIT
14-BIT
14-BIT
14-BIT
1.8V
V
DD
AMP
DIFF
REF
Figure 1. Functional Block Diagram
REFH
REFH
2.2μF
0.1μF
0.1μF
REFL
REFL
0.1μF
ENC
V
PLL
+
DD
ENC
VCM12
/2
0.1μF
–
VCM34
0.1μF
PAR/SER
CS
REGISTERS
CONTROL
MODE
SERIALIZER
SCK
DATA
1.8V
SDI
OV
DD
SDO
217214 F01
OUT1A
OUT1B
OUT2A
OUT2B
OUT3A
OUT3B
OUT4A
OUT4B
DATA
CLOCKOUT
FRAME
OGND
21721014f